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This article mainly shows you "how to use the system function in python", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn "how to use the system function in python" this article.

System function

The basic invocation format is as follows:

Import os os.system ("some_command with args")

The system function passes commands and arguments to the system's Shell. This is great because you can actually run more than one command at a time and set up pipes and input / output redirection. For example:

Import os os.system ("cat command.py | grep-n subprocess > result.txt")

Executing this code generates a result.txt file in the current directory.

Although this is convenient, escape characters (such as spaces, and so on) must be handled manually. So doing this simply allows you to run the Shell program, not to extend the program's functionality.

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